do a full wipe in cwm (wipe data,cache, advanced/wipe dalvik cache, mounts and storage/format everythink exept sdcard) ang then install r6 and gapps.
to boot in cwm press and hold power and volume + buttons.

kyan31 i wiped everythink again and now i haven't got any fc, big thank for rom!
i think only what is left to do with lightning is to remove supersu and rom settings from menu, but i can live with that, again thank for rom!